G32 runs off the bed

cinematographer

I am trying to figure out what I am doing wrong. No matter what numbers I put in #define Z_PROBE params the head eventually goes off the edge of the bed, Am I missing something?

  ################### Z-Probing #####################

#define Z_PROBE_Z_OFFSET 0

#define Z_PROBE_Z_OFFSET_MODE 1

#define UI_BED_COATING 1

#define FEATURE_Z_PROBE 1

#define Z_PROBE_BED_DISTANCE 3

#define Z_PROBE_PIN ORIG_Z_MIN_PIN

#define Z_PROBE_PULLUP 1

#define Z_PROBE_ON_HIGH 1

#define Z_PROBE_X_OFFSET 0

#define Z_PROBE_Y_OFFSET 0

#define Z_PROBE_WAIT_BEFORE_TEST 0

#define Z_PROBE_SPEED 5

#define Z_PROBE_XY_SPEED 125

#define Z_PROBE_SWITCHING_DISTANCE .7

#define Z_PROBE_REPETITIONS 2

#define Z_PROBE_HEIGHT 0

#define Z_PROBE_START_SCRIPT ""

#define Z_PROBE_FINISHED_SCRIPT ""

#define Z_PROBE_REQUIRES_HEATING 0

#define Z_PROBE_MIN_TEMPERATURE 150

#define FEATURE_AUTOLEVEL 1

#define Z_PROBE_X1 20 // LAST POINT IN THE SERIES

#define Z_PROBE_Y1 20

#define Z_PROBE_X2 160

#define Z_PROBE_Y2 20

#define Z_PROBE_X3 100

#define Z_PROBE_Y3 160

#define BED_LEVELING_METHOD 1

#define BED_CORRECTION_METHOD 0

#define BED_LEVELING_GRID_SIZE 3

#define BED_LEVELING_REPETITIONS 1

#define BED_MOTOR_1_X 0

#define BED_MOTOR_1_Y 0

#define BED_MOTOR_2_X 0

#define BED_MOTOR_2_Y 0

#define BED_MOTOR_3_X 0

#define BED_MOTOR_3_Y 0

#define BENDING_CORRECTION_A 0

#define BENDING_CORRECTION_B 0

#define BENDING_CORRECTION_C 0

#define FEATURE_AXISCOMP 1

#define AXISCOMP_TANXY 0

#define AXISCOMP_TANYZ 0

#define AXISCOMP_TANXZ 0

Repetier

If you g´have enabled grid leveling the 3rd point is wrong. Wound need to be 20 160 so the 3 points build a rectangle as described in image from config tool.

cinematographer

I made the suggested change but the results were the same It acts like a much bigger printer

MartinH

#define Z_PROBE_X_OFFSET 0

#define Z_PROBE_Y_OFFSET 0

your probe is set to the same position as the nozzle

cinematographer

Yes, because probe is built into the nozzle.

Repetier

Check coodinates in eeprom not in configuration.h!

cinematographer

Would you happen to have recommended set of coordinates for a 200mm bed delta? It would save a lot of heartache for us neophytes.

Repetier

-50,-50. ; 50,-50 ; -50, 50 If you add your z probe offset you can go more outside maybe, but these would work on many deltas.

cinematographer

Thank you! I also discovered (no thanks to the assembly instructions,but in a forum post here) that the motors need to be in a specific order. counterclockwise from the right front xyz. I had them hooked up any old way and my print was a mirror image of what it should be. Also it played hell with setting up the probe points as well.

Rossini

I think a lot of people are a little confused on the Probe Points. Because it is possible to describe a rectangle with 3 Points where the third point only describes the height and not the angle too. 

With 3 Point Measurement on a Delta you would measure the three towers. If you switch to n-grid measurement it is unintuitive that the 3 points are describing a parallelogram. 

I didn't expect that it would be possible to describe a parallelogram with the grid probe positions.

Maybe an extra note in the configurator "ATTENTION: NOT A PARALLELOGRAM" would help. Or change that the third point acts as height on the point1 <-> point2 and not as cornerpoint.

Repetier

Since this seems to happen sometimes maybe just take min/max from points to get the grid region, so any combination would work. Also describing a parallelogram might be nice i do not think it is really required.